:root {
    --bg: #0d1117;
    --card: #161b22;
    --border: #30363d;
    --text: #e6edf3;
    --muted: #8b949e;
    --primary: #4a9eff;
    --nano-blue: #209ce9;
}

body {
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

.navbar-dark {
    background: linear-gradient(135deg, #1a1f2e 0%, #0d1117 100%);
    border-bottom: 1px solid var(--border);
}

.navbar-brand {
    font-weight: 700;
    color: var(--text) !important;
}

.ws-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    padding: 6px 10px;
    border-radius: 20px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.dot-on {
    background: #2ea043;
    box-shadow: 0 0 6px #2ea043;
    animation: pulse 1.5s infinite;
}

.dot-off {
    background: #f85149;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
}

.card-header {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border);
}

.card-footer {
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid var(--border);
}

.form-control, .form-select {
    background: #0d1117;
    border-color: var(--border);
    color: var(--text);
}

.form-control:focus, .form-select:focus {
    background: #0d1117;
    border-color: var(--primary);
    color: var(--text);
    box-shadow: 0 0 0 0.25rem rgba(74, 158, 255, 0.25);
}

.btn-primary {
    background: var(--nano-blue);
    border-color: var(--nano-blue);
    font-weight: 600;
}

.btn-primary:hover {
    background: #1a87d4;
    border-color: #1a87d4;
}

.btn-outline-secondary {
    color: var(--muted);
    border-color: var(--border);
}

.btn-outline-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
}

.block-info label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-bottom: 4px;
}

.block-value {
    background: #0d1117;
    border: 1px solid var(--border);
    padding: 10px 12px;
    border-radius: 6px;
    word-break: break-all;
    font-size: 0.85rem;
}

.block-link {
    display: block;
    color: var(--primary);
    text-decoration: none;
    transition: border-color 0.15s, background 0.15s;
}

.block-link:hover {
    border-color: var(--primary);
    background: rgba(74, 158, 255, 0.08);
    color: #7ab8ff;
}

.mono {
    font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

.seed-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 8px;
}

.seed-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #0d1117;
    border: 1px solid var(--border);
    padding: 10px 14px;
    border-radius: 6px;
    transition: border-color 0.15s, transform 0.1s;
}

.seed-item:hover {
    border-color: var(--primary);
    transform: translateY(-1px);
}

.seed-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    background: rgba(74, 158, 255, 0.15);
    color: var(--primary);
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.seed-word {
    font-family: 'SF Mono', 'Cascadia Code', monospace;
    font-size: 0.95rem;
    color: var(--text);
    word-break: break-word;
}

.form-check-input {
    background-color: var(--border);
    border-color: var(--muted);
}

.form-check-input:checked {
    background-color: var(--nano-blue);
    border-color: var(--nano-blue);
}

.form-check-input-label {
    color: var(--text);
    margin-left: 8px;
    cursor: pointer;
}

.footer {
    border-top: 1px solid var(--border);
    background: var(--card);
}

/* Disclaimer */
.disclaimer {
    background: rgba(248, 81, 73, 0.06);
    border: 1px solid rgba(248, 81, 73, 0.25);
    border-radius: 8px;
    padding: 20px 24px;
    color: var(--text);
}

.disclaimer-icon {
    font-size: 1.6rem;
    color: #f85149;
    margin-bottom: 8px;
    display: block;
}

/* GitHub / credit */
.gh-link {
    color: var(--muted);
    font-size: 1.15rem;
    transition: color 0.15s;
    line-height: 1;
    padding: 4px 6px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.gh-link:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.credit {
    margin-bottom: 0;
    color: var(--muted);
    font-size: 0.85rem;
}

.credit-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.credit-link:hover {
    text-decoration: underline;
}

.disclaimer b {
    color: #f85149;
    letter-spacing: 0.06em;
}

.disclaimer p {
    color: var(--muted);
    font-size: 0.85rem;
    line-height: 1.65;
    margin-bottom: 8px;
}

.disclaimer p b {
    color: var(--text);
    letter-spacing: normal;
}

.disclaimer code {
    background: #0d1117;
    border: 1px solid var(--border);
    color: var(--primary);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.82rem;
}

.toast {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
}

.toast-header {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

.text-warning {
    color: #d29922 !important;
}

.text-muted {
    color: var(--muted) !important;
}

.spinner-border-sm {
    margin-right: 4px;
}

/* Pipeline */
.pipeline {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    gap: 6px;
    margin-bottom: 16px;
}

.pipe-step {
    flex: 1 1 0;
    min-width: 130px;
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
}

.pipe-title {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 4px;
}

.pipe-value {
    font-size: 0.78rem;
    color: var(--text);
    word-break: break-all;
}

.pipe-arrow {
    display: flex;
    align-items: center;
    color: var(--muted);
    font-size: 1.2rem;
    padding: 0 2px;
}

/* Formula box */
.formula-box {
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px 14px;
    margin: 10px 0;
}

.formula-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-bottom: 6px;
}

.formula {
    font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
    font-size: 0.82rem;
    color: var(--text);
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.6;
}

/* Nav pills */
.nav-pill-group {
    display: inline-flex;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 3px;
    gap: 2px;
}

.nav-pill {
    background: transparent;
    border: none;
    color: var(--muted);
    font-size: 0.8rem;
    padding: 5px 14px;
    border-radius: 18px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.nav-pill:hover {
    color: var(--text);
}

.nav-pill.active {
    background: var(--nano-blue);
    color: #fff;
}

/* FAQ */
.faq details {
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
}

.faq details:first-child {
    padding-top: 0;
}

.faq details:last-child {
    border-bottom: none;
}

.faq summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
    font-size: 0.92rem;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.faq summary::-webkit-details-marker {
    display: none;
}

.faq summary::before {
    content: '+';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: rgba(74, 158, 255, 0.15);
    color: var(--primary);
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 700;
    flex-shrink: 0;
    transition: transform 0.15s;
}

.faq details[open] summary::before {
    content: '-';
}

.faq p, .faq ul {
    color: var(--muted);
    margin: 6px 0 0 28px;
    font-size: 0.85rem;
    line-height: 1.6;
}

.faq ul {
    padding-left: 18px;
}

.faq code {
    background: #0d1117;
    border: 1px solid var(--border);
    color: var(--primary);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.82rem;
}

.security-list {
    color: var(--muted);
    font-size: 0.85rem;
    line-height: 1.7;
    padding-left: 18px;
}

/* Why Nano */
.why-nano-card .card-header {
    background: linear-gradient(135deg, rgba(32, 156, 233, 0.12), rgba(74, 158, 255, 0.05));
    border-bottom: 1px solid var(--border);
    color: var(--nano-blue);
    font-weight: 600;
}

.why-lead {
    color: var(--text);
    font-size: 0.9rem;
    margin-bottom: 14px;
}

.why-lead em {
    color: var(--nano-blue);
    font-style: normal;
    font-weight: 600;
}

.why-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px 14px;
    height: 100%;
}

.why-item i {
    color: var(--primary);
    font-size: 1.4rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.why-item b {
    color: var(--text);
    display: block;
    font-size: 0.88rem;
    margin-bottom: 4px;
}

.why-item span {
    color: var(--muted);
    font-size: 0.82rem;
    line-height: 1.55;
}

.why-item a {
    color: var(--primary);
}

.why-tip {
    background: rgba(32, 156, 233, 0.08);
    border: 1px solid rgba(32, 156, 233, 0.25);
    color: var(--text);
    font-size: 0.85rem;
    border-radius: 6px;
    margin-bottom: 0;
}

.why-tip i {
    color: var(--nano-blue);
}

.why-references {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.why-ref-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    color: var(--primary);
    background: rgba(74, 158, 255, 0.1);
    border: 1px solid rgba(74, 158, 255, 0.25);
    padding: 4px 10px;
    border-radius: 12px;
    text-decoration: none;
    transition: background 0.15s;
}

.why-ref-link:hover {
    background: rgba(74, 158, 255, 0.2);
}

/* Salt strength indicator */
.salt-indicator {
    margin-top: 6px;
}

.salt-bar {
    height: 4px;
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 6px;
}

.salt-bar-fill {
    height: 100%;
    transition: width 0.25s ease, background-color 0.25s ease;
    background: var(--primary);
}

.salt-msg {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.8rem;
}

.salt-msg .badge {
    font-size: 0.7rem;
    padding: 3px 8px;
    flex-shrink: 0;
    margin-top: 1px;
}

.salt-msg-text {
    color: var(--muted);
    line-height: 1.45;
    flex: 1;
}

/* Border colors for salt input by level */
.form-control.border-danger,
.form-control.border-danger:focus {
    border-color: #f85149 !important;
    box-shadow: 0 0 0 0.15rem rgba(248, 81, 73, 0.25) !important;
}

.form-control.border-warning,
.form-control.border-warning:focus {
    border-color: #d29922 !important;
    box-shadow: 0 0 0 0.15rem rgba(210, 153, 34, 0.25) !important;
}

.form-control.border-success,
.form-control.border-success:focus {
    border-color: #2ea043 !important;
    box-shadow: 0 0 0 0.15rem rgba(46, 160, 67, 0.25) !important;
}

/* Password generator */
.form-range {
    accent-color: var(--nano-blue);
}

.form-check-input:checked {
    background-color: var(--nano-blue);
    border-color: var(--nano-blue);
}

.form-check-label code {
    background: #0d1117;
    border: 1px solid var(--border);
    color: var(--muted);
    padding: 0 5px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-left: 4px;
}

.password-box {
    background: #0d1117;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px 16px;
    margin-top: 14px;
    position: relative;
    word-break: break-all;
}

.password-text {
    font-size: 0.95rem;
    color: var(--text);
    line-height: 1.6;
    user-select: all;
}

.progress {
    background: #0d1117;
}

.progress-bar {
    transition: width 0.3s ease;
}